/* 
 * This program is free software; you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation; either version 3 of the License, or 
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
 * for more details.
 * 
 * You should have received a copy of the GNU General Public License along 
 * with this program; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */


#ifndef WISHMASTER_THREADPTR_H
#define WISHMASTER_THREADPTR_H

#include <QAtomicInt>
#include "misc.h"

namespace Wishmaster
{
	class Thread;
	// This class is used to count references on Thread objects. If there's more than
	// one reference, thread won't be swapped.
	class WISHMASTER_EXPORT ThreadPtr
	{
	public:
		ThreadPtr();
		ThreadPtr(Thread* t);
		ThreadPtr(const ThreadPtr& t);
		virtual ~ThreadPtr();
		Thread* data() {return m_thread;}

		Thread* operator->();
		const Thread* operator->() const;
		ThreadPtr& operator=(Thread* t);
		ThreadPtr& operator=(const ThreadPtr& t);
		bool operator!() const;
		bool operator==(const ThreadPtr& t) const;
		bool isNull() const;

		int refCount() const;

		typedef unsigned long IdType;

		static bool sortFunction(const ThreadPtr t1, const ThreadPtr t2);
	
	private:
		QAtomicInt* m_refcount;
		Thread* m_thread;
	};
}

#endif

